The journey of a killer can be explained with the concept Nature VS Nurture. Nature is the concept that refers to the many characteristics inherited from the genetic makeup with which a human being is born. Education is the influence of the environment, including parenting style and economic factors. Furthermore, many believe that the killers were born with mutated (abnormal) DNA. However, this concept is subject to debate because modern geneticists claim that killers are not born that way and that it is their environment, the environment, where a killer's mind is born or formed. However, if we look at these two elements together, we can conclude that the end product of a human being's mind and actions is the end result of the human being's nature and upbringing.